Door contact switches for the doors or the flaps (if an automatic door opening "ADO"
Chapter 6.2.6 “Instructions for the use of the DET-AC III Master
system with simultaneous use of an automatic door opening "ADO"” on page 47
) of
the 19" cabinet to be protected can be connected to connections "5" and "13"
(Fig. 10) . This serves to monitor the cabinet door positions / flap positions ("ADO")
of the object to be protected. When a door / flap of the 19" cabinet to be protected is
opened, the extinguishing of the system is blocked and the message
“Blocking by
door cont.”
appears in the display.
The installation of door contact switches is described in
5.3.3
Interfaces to the Monitoring System
6
7
8
16
Fig. 11: CMC connections
The active extinguishing system DET-AC III Master has a CAN bus interface
(Fig. 11/16) for connecting to various network-capable monitoring systems from
Rittal. All states and messages that are listed in the table shown below can be
queried through it.
Binary alarm states
Binary failure states
Messages
External release
Failure manual call point
Mains failure
Fire
Blocking by door cont.
Failure ignition cap.
Manual release
Failure door contact
Pre-alarm
Failure power supply unit (PSU)
Failure battery
Failure air flow (pressure too high)
Failure air flow (pressure too low)
Failure detector 1
Failure detector 2
Failure communication
Failure extinguishing output
Extinguishing agent loss
Maintenance interval expired
Battery change required
Structure, function and connections
Operating Instructions / DET-AC III Master / 916005 / 11-2022 / en_US
32
